To find the confidence interval, adjust the result of the poll by adding and subtracting the ______________.
A)average
B)margin of error
C)confidence level
D)median

Question

Quizplus · Accepted Answer

The margin of error represents the amount by which the poll result could be off due to random sampling variation. Adding and subtracting the margin of error to the poll result creates a range of values within which the true population parameter (e.g. proportion or mean) is likely to lie with a certain level of confidence. Thus, the confidence interval can be found by using the margin of error.

To Find the Confidence Interval, Adjust the Result of the Poll